https://github.com/fablabnbg/inkscape-centerline-trace/issues/5#issuecomment-265520576
autotrace.exe	https://github.com/scottvr/autotrace-win64-binaries
get-pip.py 	https://pip.pypa.io/en/stable/installing
get-pip.py 	https://bootstrap.pypa.io/get-pip.py
